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Structure of Complexes and Analytical Test Methods

The Structure of Complexes and Analytical Test Methods were presented by Reşat UCA at the 1st National Textile Auxiliary Chemicals Congress held in Bursa in 2002 with the cooperation of Tübitak BUTAl and Uludağ University.

Son Güncelleme: 26 Temmuz 2022 , Salı

The summary and conclusion of the article are as follows.

In the process of preparing and dyeing cotton for dyeing, calcium, magnesium and iron salts, which reduce the process efficiency, are removed from the environment with complexing agents.

The structure of complexing agents is also different according to different usage areas. It is also used in ion-retaining bleaching, which is generally used in dyeing. Their structures are generally; Compounds such as polyacrylate, phosphonate, sodium hexametaphosphate, EDTA.

Comparisons of these chemicals are generally made by three methods.

a. Classical Ion Binding Determination (Detections made with indicator)

b. Hamshire Method (Calcium anti-turbidity power)

c. Boiling Down

One of these test methods, the indicator method is an analytically measurable value. It maintains its repeatability and repeatability when conditions change. This difference emerges in the tests performed separately in pure and soft water.

In our study, an analytical comparison of these three methods, which are the most known and used in the sector, was made.

In these studies, analytical studies of complexing agents with different structures were performed according to three methods.


Since the pH values ​​and impurities are the same in the process and method, the determination of the ion scavenger to be used in the dyeing process of the cotton with the indicator gives more accurate results. The method of lowering the boiling point also gives information. The Hamshire method cannot be used for the determination of the ion scavenger.